Year % of female population 1960 0.57124684739132 1961 0.575737441564681 1962 0.607709267660656 1963 0.632258603455681 1964 0.649190912360485 1965 0.658088046556827 1966 0.659167541871649 1967 0.655566576372117 1968 0.650441126363073 1969 0.642020468393723 1970 0.626732988143628 1971 0.596870742963741 1972 0.562167344074772 1973 0.537250053277608 1974 0.519040594988854 1975 0.503596051598596 1976 0.491650000161765 1977 0.485334478229658 1978 0.483622668118548 1979 0.484806842060093 1980 0.459117260062374 1981 0.415126659237311 1982 0.393210069622718 1983 0.383970260118681 1984 0.379644375395123 1985 0.38158543125221 1986 0.383278548896703 1987 0.383732657118311 1988 0.38588982190962 1989 0.391237629928642 1990 0.399329473370787 1991 0.409741012272397 1992 0.419780952365251 1993 0.429610611691516 1994 0.442168545814563 1995 0.457748371797603 1996 0.475936552095072 1997 0.495351340327476 1998 0.513254230295979 1999 0.531187169379245 2000 0.549956858507919 2001 0.566767590471334 2002 0.582905860579062 2003 0.599306294028035 2004 0.612831384956711 2005 0.624169065865527 2006 0.636146332528625 2007 0.648025448841033 2008 0.660315704157636 2009 0.672852397943779 2010 0.681169155363885 2011 0.684333958866931 2012 0.68490982039876 2013 0.682337835003001 2014 0.675794589342511 2015 0.666621757236896 2016 0.657704115666824 2017 0.648729790318364 2018 0.635183577745285 2019 0.618127105663684 2020 0.602696873130416 2021 0.588516035140341 2022 0.577438227455306 2023 0.578657425561403